Tert-Butyl nitrite → HCID 22466148, compound

Participants

Reaction Steps

With ice-cooling, initially 9.5 g (92 mmol) of tert-butyl nitrite were added dropwise to a solution of 20 g (62 mmol) of 2-chloro-5-(3-chloro-5-trifluoromethyl-2-pyridyl)-4-fluoroaniline in 40 ml of trifluoroacetic acid, and—with strong evolution of gas—6 g (92 mmol) of sodium azide were then added a little at a time. The mixture was stirred for 16 hours, and a further 15 ml of trifluoroacetic acid and 1.7 g (17 mmol) of tert-butyl nitrite were then added to the reaction mixture. Stirring was subsequently continued for another 30 minutes, and the mixture was then poured onto 0.3 l of ice-water. The resulting solid fraction was separated off and washed with 50 ml of water. For purification, the crude product was initially dissolved in 100 ml of toluene. The resulting toluene phase was then washed with saturated aqueous sodium bicarbonate solution, dried over magnesium sulfate and finally concentrated. Yield: 90%;

Provenance & Evidence